Source: April 1917 casualty.
Family Search: Private John Robert Henry was born on 17 November 1891, in Newcastle upon Tyne, Northumberland, England, United Kingdom as the son of Henry and Ellen. He immigrated to Canada in 1913. He registered for military service in 1915. In 1915, at the age of 24, his occupation is listed as farmer in Ridgetown, Kent, Ontario, Canada. He died on 9 April 1917, in Thélus, Pas-de-Calais, France, at the age of 25, and was buried in Thélus, Pas-de-Calais, France.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 